Out-of-Stock Μηχανουργικα External & Internal Restorer Thread File inch 153-237C €32.00 External & Internal Restorer Thread File inch. These top quality thread restoring files are designed for renewing damaged threads on bolt, stud, axle or shafts of any diameter. Suitable for both left and right hand threads. A must for any mechanical or engineering application. Designed for use in hidden & narrow areas be it internal or external... View